
sel elektrolisis

Quiz
•
Chemistry
•
12th Grade - University
•
Medium
Standards-aligned
Used 176+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan gambar diatas!
Reaksi yang terjadi di katoda adalah ....
K+(aq) + e → K(s)
4OH−(aq) → 2H2O(l) + O2(g) + 4e
2I−(aq) → I2(s) + 2e
2H2O(l) + 2e → H2(g) + 2OH−(aq)
Tags
NGSS.HS-PS1-2
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada reaksi elektrolisis larutan NiSO4 dengan elektroda Ag. Reaksi yang terjadi pada anoda adalah ….
Ni2+(aq) + 2e -----> Ni(s)
Ag(aq) ------> Ag+(aq) + e
Ni(s) -----> Ni2+(aq)+ 2e
2 H2O(l) + 2e ------> H2(g)+ 2 OH–(aq)
2 H2O(l) -------> 4 H+(aq) + O2(g) + 4e
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada elektrolisis larutan tembaga(II) sulfat dengan elektrode tembaga, di anode terjadi reaksi ….
Cu2+ + 2e → Cu
Cu → Cu2+ + 2e
2H2O + 2e → 2OH- + H2
2H2O → 4H+ + O2 + 4e
H2 → 2H+ + 2e
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada elektrolisis larutan tembaga(II) sulfat dengan elektrode besi di katode, dan di anode elektrode tembaga, di katode setelah elektrolisis akan terjadi .....
Endapan tembaga
Gas hidrogen
Gas oksigen
Gas klorin
ion OH-
Tags
NGSS.HS-PS2-5
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Larutan CuCl2 (Ar Cu=63,5) dielektrolisis menggunakan elektrode karbon dengan arus sebesar 5 ampere selama 30 menit, logam Cu yang diendapkan di katode sebanyak ....gram
29,6
14,8
2,96
1,48
0,74
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Pada elektrolisis leburan KI dengan electrode C, di ruang katode terjadi peristiwa reduksi yang reaksinya dapat ditulis ….
K+(aq) + e --> K(s)
K(s) ----- K+(aq) + e
2H2O(l) + 2e --> 2OH- (aq) + H2(g)
2H2O(l) --> 4H+ (aq) + O2(g) + 4e
2I- (aq) --> I2(g) + 2e
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Reaksi yang terjadi pada katode dari elektrolisis larutan Na2SO4 adalah ….
2H2O(aq) + 2e ------ 2OH–(aq) + H2(g)
2H+(aq) + 2e ------ H2(g)
Na+(aq) + e ----- Na(s)
SO42-(aq) + 2e ----- SO4(aq)
4OH–(aq) ------ 2H2O(aq) + O2(g) + 4e
Tags
NGSS.HS-PS1-2
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